kusible

Kusible

kusible is a multi-kubernetes-helm-chart-deployment tool. It uses YAML files which describe chart repositories, chart versions, chart settings, kubernetes clusters and so on. It uses this information to deploy charts to multiple clusters, each with its own version and settings.

File structure and certain keywords are intentionally similar to Ansible. Differences result from the different needs of the tasks to be performed and the tools used.

Kusible makes heavy use of Spruce to manipulate YAML and JSON files so understanding of Spruce Operators and YAML anchors is useful. Usage of ejson to store encrypted data is also supported.

Sample application structure

.
├── group_vars
│   ├── all.yml
│   ├── dev.yml
│   ├── prod.yml
│   └── test.yml
├── inventory
│   └── clusters.yml
├── playbook.yml
└── kubeconfig_dev

playbook.yml:

---
plays:
  - name: install-prometheus-operator
    groups: [all]
    charts:
    - name: prometheus-operator
      repo: stable
      chart: prometheus-operator
      version: (( grab vars.VERSIONS.prometheus-operator ))
      namespace: kube-system
      values: (( grab vars.VALUES ))
    repos: (( grab vars.REPOS ))

inventory/clusters.yml:

---
inventory:
  - name: k8s-dev
    groups: [dc1,dev]
    kubeconfig:
      backend: file
      params:
        path: kubeconfig_dev
  - name: k8s-test
    groups: [dc2,test]
    kubeconfig:
      backend: s3
      params:
        accesskey: "test_accesskey"
        secretkey: "test_secretkey"
        server: s3.somewhere.com
        decrypt_key: verysecretkey
        bucket: kubernetes
        path: k8s-test/kubeconfig.enc.7z
  - name: k8s-prod
    groups: [dc3,prod]
    kubeconfig:
      backend: s3
      params:
        accesskey: "prod_accesskey"
        secretkey: (( vault "secret/my/credentials/admin:password" ))
        server: s3.somewhere.com
        decrypt_key: (( vault "secret/my/credentials/admin:decryptkey" ))
        bucket: kubernetes
        path: k8s-prod/kubeconfig.enc.7z

group_vars/all.yml

---
vars:
  REPOS:
    - name: stable
      url: https://charts.helm.sh/stable
  VALUES:
    defaultRules:
      create: false
    alertmanager:
      enabled: false
    grafana:
      enabled: false
    kubeApiServer:
      enabled: false
    kubelet:
      enabled: false
    kubeControllerManager:
      enabled: false
    coreDns:
      enabled: false
    kubeDns:
      enabled: false
    kubeEtcd:
      enabled: false
    kubeScheduler:
      enabled: false
    kubeStateMetrics:
      enabled: false
    nodeExporter:
      enabled: false
    prometheus:
      enabled: false
    prometheusOperator:
      kubeletService:
        enabled: true
      image:
        repository: coreos/prometheus-operator
      configmapReloadImage:
        repository: coreos/configmap-reload
      prometheusConfigReloaderImage:
        repository: coreos/prometheus-config-reloader
      hyperkubeImage:
        repository: google-containers/hyperkube

group_vars/dev.yml

---
vars:
  VERSIONS:
    prometheus-operator: ">0.0.0-0"

group_vars/test.yml

---
vars:
  VERSIONS:
    prometheus-operator: ">0.0.0"

group_vars/prod.yml

---
vars:
  VERSIONS:
    prometheus-operator: "5.12.3"

Command line

This is a CLI tool to render and deploy kubernetes resources to multiple clusters

Usage:
  kusible [command]

Available Commands:
  deploy      Deploy an application
  groups      List available groups based on given regex
  help        Help about any command
  inventory   Get inventory information
  render      Render an application as kubernetes manifests
  uninstall   Uninstall an application
  values      Compile values for a list of groups
  version     Print the version number of kusible

Flags:
  -h, --help               help for kusible
      --json-log           log as json
      --log-functions      log function names (performance impact!)
      --log-level string   log level (trace,debug,info,warn/warning,error,fatal,panic) (default "warning")
  -q, --quiet              Suppress all normal output

Use "kusible [command] --help" for more information about a command.

Documentation

See documentation

License

Licensed under the Apache 2.0 license